Comparing the Effectiveness of Motor Ambulances in Pre-hospital Emergency Medical Services Compared to Ambulances in Tehran City, Iran

Background: Pre-hospital emergency medical services are one of the vital parts of the health system, which was created to timely diagnose and treat patients injured in life-threatening conditions. The use of motorcycles has increased in recent years to reach the golden time standard and overcome traffic in some countries, especially Iran. This study was conducted to investigate the effectiveness of a motor ambulance compared to an ambulance in Tehran City, Iran. Materials and Methods: The present study is a cross-sectional descriptive-analytical type. The time to reach the patient’s bedside, death at the scene, and physiological parameters of the patient at the time of delivery to the hospital were studied as effectiveness indicators in this model. Since the primary data on the effectiveness of these two interventions is mortality, according to previous studies, the mortality data should be converted into the form of prevented mortality and enter the analysis phase. In this study, since the mortality index is expressed as a percentage, the difference in the mortality index from 100 was estimated as the prevented mortality index and entered into the analysis. Results: The results showed that the chance of death in the motor ambulance group with an ambulance in severe level patients is 44.8% and 66.9% in the ambulance group. In the motorcycle and ambulance group, the probability of death for patients with mild and moderate injuries was estimated at 0.02% in ambulance missions and 0.7% in motorcycle and ambulance missions (P=0.05).  Conclusion: According to the desired outcome (reduction of death), the use of motor ambulance with ambulance was effective in severe group patients. Of course, this outcome alone cannot be an accurate basis for judgment, and outcomes such as survival, disability-adjusted life years, and quality-adjusted life years seem necessary for a more accurate evaluation.